Ariston Motor 3 Way Valve Diverter Valve is a part that only appears in combi boilers, it allows the hot water to be sent to the central heating system (radiators, etc.) or to the hot water system (taps, etc.). This feature is what separates a normal boiler from a combination boiler due to the fact that a combi boiler wouldn't require a cylinder to provide heating and hot water. The diverter valve functions the same whether it is a condensing or non-condensing combi boiler.
3 way diverter valve
Technical specification
TypeMotor ValveCompatible WithAriston Clas HE 24, Ariston Clas HE 30, Ariston Clas HE 38Manufacturer Model No61302483-01Brand NameAriston